I have never done it, so I am not sure whether you can or you cannot.
Which software are you using at the moment? Could you please try OpenOCD?
OpenOCD team member Paul Fertser has TUMPA and TUMPA-lite test/development units. I think you could use his help.
Could you please try FreeNode IRC server,
#openocd channel.
irc://chat.freenode.net/openocd
You can
Connect now using Freenode webchat, no IRC client needed.
Alternatively you can e-mail him. His e-mail address is
fercerpav (at) gmail.com
Please post feedback here if you solve your problem, for other users to benefit.